Air cooler



FIG. 1 is a perspective view of an air cooler showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged view of circled portion 8 in FIG. 2;

FIG. 9 is a perspective view of a second embodiment of an air cooler ofmy new design;

FIG. 10 is a left side elevational view of FIG. 9;

FIG. 11 is a right side elevational view of FIG. 9;

FIG. 12 is a front elevational view of FIG. 9;

FIG. 13 is a rear elevational view of FIG. 9;

FIG. 14 is a top plan view of FIG. 9;

FIG. 15 is a bottom plan view of FIG. 9; and,

FIG. 16 is an enlarged view of circled portion 16 in FIG. 10.

CLAIM The ornamental design for an air cooler, as shown and described.